Railway signaling device



I Nov. 15, 1927.

Filed Dec. 24. 1926 mf z tion on the line A-B of Patented Nov. 15, 1927.

JOHANNES BENNEWITZ, OF LEIIZIG, GERMANY, ASSIGNOR OF ONE-HALF TO FRITZ L'UNOW, 0F LEIPZIG, GERMANY. I I

RAILWAY SIGNALING nnvxon.

Application filed December Railway workmen when employed on the permanent line are frequently exposed to accidents, particularly in foggy weather or within a tunnel, by approaching trains or locomotives, because they could not be warned in time.

The present invention relates to an 1mproved electric railway signaling device, which is operated by the wheels of a train or locomotive for warning the workmen on the line.

The accompanying drawing illustrates the improved device: Fig. 1 is a front view of the same, Fig. 2 is an end view,partly in sec- Fig. 1, of a detail, Fig. 3 is an end View of another detail thereof, while Fig. 4 shows a connection diagram used for the improved device.

The device comprises an alarm bell located at the place where the workmen on the permanent line are employed, and a contrivance on the permanent line arranged at an appropriate distance from said place and to be operated by the wheels of alocomotive or train, said alarm bell and contrivance being connected by a detachable electric conduit.

Said alarm bell is of the conventional type, while said contrivance is constructed as follows :-A bracket a is detachably fixed to the foot of a rail 00 of the permanent line by means of a fly-screw a and provided with an upright member at having a vertical guide 5 therein and with two horizontal arms 0, (Z having two upright bolts g, h thereon and forming copper terminals 6, at their ends. Said guide 6 serves for the reception of a bolt is of a T-shaped strap '5 arranged beside the head of the rail 06 and which carries at its ends depending bars Z, m

facing at their copper ends the copper terminals e, f. Said strap carries further depending brushes a, 0 in which engage the ends of the bolts g, h, pressure-springs p, q being located within said bushes and serving tonormally keep said strap i in a position projecting somewhat beyond the head of the rail, in which position the copper bars Z, m are out of contact with the terminals e, f.

All the parts described are current-fed in a way known in the art, as illustrated in Fig. 4. Y

The upright member a of the bracket 0:

24, 1926, Serial No. 156,952, and in Germany October 1, 1928.

the pressure-springs 10, q, whereby the copper bars Z, m come in contact with the terminals 6, f and the electric circuit is closed, so that the alarm bell rings and indicates to the workmen on the permanent line the approaching train. 7

Of course, the alarm bell can also be replaced by or used in connection with an optic signal, in a way known in the art of signaling.

4 After passage of the train or locomotive, the strap 2' returns automatically into its initial position and interrupts the electric circuit so that the alarm bell ceases to ring.

What I claim, is

. A railway signaling device comprising a bracket detachably fixed to the foot of a rail of the permanent line, horizontal arms at the lower end of said bracket, current-fed copper terminals at the ends of said arms, uprightboltson said arms, a strap vertically guided in the upper end of said bracket and normally projecting beyond the head of the rail, depending copper bars on the ends of said strap facing said terminals, depending bushes on said strap in which engage the ends of said-uprigl'it bolts, pressure-springs in said bushes adapted to keep'said strap in its norm-ally raised position, an alarm contrivance arranged at a distance from said bracket, and a detachable electric conduit connecting said alarm contrivance with said bracket, said strap when depressed by the wheels of a train or locomotive passing thereover against the action of said pressuresprings closing the contact between said terminals and said copper bars and thus the electric circuit while after passage of the train it returns automatically into its normal circuit-interrupting position by action of said pressure-springs.

In testimony whereof I have hereunto set my hand.

V a JOHANNES BENNEWITZ. 

